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Step * of Lemma eu-add-length-zero

∀[e:EuclideanPlane]. ∀[x:{p:Point| O_X_p} ].  (x + X = x ∈ {p:Point| O_X_p} )
BY
{ (Auto THEN EqTypeCD THEN Auto) }

1
1. e : EuclideanPlane
2. x : {p:Point| O_X_p} 
⊢ x + X = x ∈ Point

2
.....set predicate..... 
1. e : EuclideanPlane
2. x : {p:Point| O_X_p} 
⊢ O_X_x + X

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Latex:

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Latex:
\mforall{}[e:EuclideanPlane].  \mforall{}[x:\{p:Point|  O\_X\_p\}  ].    (x  +  X  =  x)


By

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Latex:
(Auto  THEN  EqTypeCD  THEN  Auto)

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